A novel coating material for reactors

Abstract

This utility model relates to the field of coating production equipment, specifically to a novel coating material reaction vessel that solves the problem of poor centrifugal dispersion effect in existing reaction vessel stirring structures. It includes a vessel body and a vessel cover on the vessel body. A stirring mechanism is installed on the vessel cover. The stirring mechanism includes a stirring motor, a stirring shaft, and a main stirring assembly. A central stirring assembly is arranged on the stirring shaft below the main stirring assembly. The main stirring assembly includes an upper rotating component mounted on the stirring shaft, three or more upper plates extending outward from the upper rotating component, and long rods arranged on each of the upper plates and extending downward along the stirring shaft axis. The central stirring assembly includes a central rotating component mounted on the stirring shaft, three or more connecting arms extending outward from the central rotating component, and a central rod located at the end of each connecting arm and extending in both vertical and horizontal directions along the stirring shaft axis. This utility model is applied in coating production.

Description

Technical Field

[0001] This utility model relates to the field of coating production equipment, specifically to a novel coating material reaction vessel. Background Technology

[0002] Paint is applied to the surface of an object to protect or decorate it, forming a continuous, firmly adhered film that imparts properties such as abrasion resistance, high-temperature resistance, and chemical corrosion resistance. In paint production, the paint reactor is the core equipment, primarily used for the dispersion, mixing, and chemical reaction of materials such as resins, pigments, and solvents. Its core functions are the synthesis of base materials, dispersion, and blending. During operation, materials are added to the reactor and reacted under set temperature and pressure. Thorough stirring during the reaction ensures its stability.

[0003] As shown in Chinese Patent No. CN221965340U, a coating reaction vessel capable of uniform mixing is proposed, comprising: a reaction vessel body, the reaction vessel body being divided into an outer vessel body and an inner vessel body, the outer vessel body being disposed outside the inner vessel body, the inner vessel body forming a mixing chamber for mixing the main material and the auxiliary material, and further forming an opening communicating with the mixing chamber; the reaction vessel body including a reaction vessel cover, the reaction vessel cover being disposed at the opening of the inner vessel body; and a feeding device, the feeding device passing through the inner vessel body... The opening allows the predetermined main material and auxiliary material to be added into the mixing chamber of the inner vessel. The feeding device includes a main material feed pipe, at least one auxiliary material feed pipe, and a material distribution structure. Both the main material feed pipe and the auxiliary material feed pipe are permeably installed through the reactor lid of the opening and extend a predetermined distance into the mixing chamber. The material distribution structure is connected to the auxiliary material feed pipe in a lateral direction. A stirring device is also included, installed in the mixing chamber through the opening, to mix and stir the main material and the auxiliary material in the mixing chamber.

[0004] It shows the basic structure of current reaction vessels, such as the vessel body, feeding device, and stirring device.

[0005] Structurally, solid materials tend to settle in the early stages of the reaction; however, in the later stages, the coating forms an emulsion with high viscosity and high adhesion, and traditional stirring structures cannot guarantee the stirring effect. Utility Model Content

[0006] Therefore, this invention provides a novel coating material reactor that solves the problem of poor centrifugal dispersion effect of existing reactor stirring structures.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A novel coating material reaction vessel includes a vessel body and a vessel cover covering the vessel body. A stirring mechanism is installed on the vessel cover. The stirring mechanism includes a stirring motor and a stirring shaft drivenly connected to the stirring motor. A main stirring assembly is arranged on the stirring shaft located at the opening end of the vessel body, and a central stirring assembly is arranged on the stirring shaft below the main stirring assembly.

[0009] The main stirring assembly includes an upper rotating component mounted on the stirring shaft, three or more upper plates extending outward from the upper rotating component, and a long rod arranged on each of the upper plates and extending downward along the stirring shaft axis.

[0010] The central stirring assembly includes a central rotating component mounted on the stirring shaft, three or more connecting arms extending outward from the central rotating component, and a central rod located at the end of each connecting arm and extending in both the up and down directions along the stirring shaft axis.

[0011] The extension length of the upper plate is greater than the extension length of the connecting arm, and the diameter of the central rod is greater than the diameter of the long rod.

[0012] Preferably, the connecting arms are arranged at an angle, and the upper plate is arranged horizontally.

[0013] Preferably, both the connecting arm and the upper plate are arranged at an angle.

[0014] Preferably, each of the connecting arms and each of the upper plates are located in the same radial direction of the stirring shaft.

[0015] Preferably, the connecting arms and the upper plates are arranged in an alternating pattern along the radial direction of the stirring shaft.

[0016] Preferably, an electric heating tube is embedded in both the inner wall of the vessel and the center of the stirring shaft.

[0017] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0018] This technical solution achieves efficient and multi-layered mixing through the coordinated design of the main mixing component and the central mixing component. It primarily functions as rapid centrifugation and stratified mixing. The main mixing component features a long rod extending downwards along the mixing shaft from its upper plate. This long extension creates a large lever arm (upper plate length > connecting arm length), generating stronger centrifugal force during rotation. This force rapidly pushes the material outwards, creating a high-speed centrifugal flow in the outer layer. Meanwhile, the central rod of the central mixing component (diameter > long rod) uses a short lever arm design to generate higher shear stress at the same rotational speed, focusing on material mixing and refining in the central region of the vessel. Together, these components form a "pushing outwards and shearing inwards" dual-layer mixing mode, significantly improving mixing efficiency.

[0019] Structurally, the optimization of lever arm differences is achieved by using a long lever arm design (upper plate) of the main stirring component to reduce the load on the stirring motor and achieve large-scale material pushing with a small torque through the leverage effect; the short lever arm (connecting arm) of the central stirring component, combined with a large-diameter central rod, enhances the dispersion ability of high-viscosity or agglomerated materials by increasing the local contact area and shear strength. The lever arms of the two complement each other, balancing energy consumption and stirring effect.

[0020] Functionally, the axial flow during stirring is enhanced. The long rod of the main stirring component extends downward along the axis, which can guide the material to form an axial downward flow. This flow is superimposed with the axial vertical flow generated by the central rod (extending vertically) of the central stirring component, forming a three-dimensional circulating flow. This avoids material deposition and is especially suitable for solid particles or high-viscosity media that need to be uniformly dispersed in the reaction of coating materials. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the reaction vessel in Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram (view from below) showing the distribution structure of the connecting arm and the upper plate in Embodiment 1 of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the central stirring assembly in Embodiment 1 of this utility model.

[0024] Figure 4 This is a schematic diagram of the distribution structure of the connecting arm and the upper plate in Embodiment 2 of this utility model.

[0025] Reference numerals: 1. Vessel body; 11. Feed inlet; 12. Liquid inlet; 13. Discharge outlet; 2. Stirring motor; 21. Reducer; 3. Stirring shaft; 4. Main stirring assembly; 41. Upper rotating component; 42. Upper plate; 43. Long rod; 5. Central stirring assembly; 51. Central rotating component; 52. Connecting arm; 53. Central rod; 6. Electric heating tube. Detailed Implementation

[0026] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] Example 1

[0028] refer to Figures 1 to 3 A novel coating material reaction vessel includes a vessel body 1 and a vessel cover on the vessel body 1. The vessel body 1 and the vessel cover are respectively provided with a feed inlet 11 and a liquid inlet 12 for feeding materials in different states. A discharge outlet 13 is provided on the lower side of the vessel body 1. All the different material inlets are connected to different pipes to facilitate material feeding and discharging. The vessel body 1 has a double-layer structure.

[0029] A stirring mechanism is installed on the lid of the vessel. The stirring mechanism includes a stirring motor 2 (equipped with a corresponding reducer 21) and a stirring shaft 3 connected to the stirring motor 2. A main stirring assembly 4 is arranged on the stirring shaft 3 located at the opening end of the vessel body 1. A central stirring assembly 5 is arranged on the stirring shaft 3 below the main stirring assembly 4.

[0030] The main stirring assembly 4 includes an upper rotating component 41 mounted on the stirring shaft 3, three upper plates 42 extending outward from the upper rotating component 41, and a long rod 43 arranged on each of the upper plates 42 and extending downward along the axial direction of the stirring shaft 3.

[0031] The central stirring assembly 5 includes a central rotating component 51 mounted on the stirring shaft 3, three connecting arms 52 extending outward from the central rotating component 51, and a central rod 53 located at the end of each connecting arm 52 and extending in both the up and down directions along the axial direction of the stirring shaft 3.

[0032] The extension length of the upper plate 42 is greater than the extension length of the connecting arm 52, and the diameter of the central rod 53 is greater than the diameter of the long rod 43. This technical solution achieves efficient, multi-layered mixing through the coordinated design of the main stirring assembly 4 and the central stirring assembly 5. It primarily functions as rapid centrifugation and stratified mixing. The long rod 43, extending downwards along the stirring shaft 3 from the upper plate 42 of the main stirring assembly 4, combined with its relatively long extension length, forms a larger lever arm (length of the upper plate 42 > length of the connecting arm 52), generating stronger centrifugal force during rotation. This force can quickly push the material outwards, forming a high-speed centrifugal flow in the outer layer. Meanwhile, the central rod 53 of the central stirring assembly 5 (diameter > long rod 43), through its short lever arm design, can generate higher shear stress at the same rotation speed, focusing on the mixing and refining of materials in the central area of ​​the vessel 1. The two work together to form a "pushing outwards and shearing inwards" dual-layer mixing mode, significantly improving mixing efficiency.

[0033] In terms of structural optimization of lever arm differences, the long lever arm design (upper plate 42) of the main stirring component 4 can reduce the load on the stirring motor 2 and achieve large-range material pushing with a small torque through the leverage effect; the short lever arm (connecting arm 52) of the central stirring component 5, in conjunction with the large-diameter central rod 53, enhances the dispersion ability of high viscosity or agglomerated materials by increasing the local contact area and shear strength. The lever arms of the two complement each other, taking into account both energy consumption and stirring effect.

[0034] Functionally, the axial flow during stirring is enhanced. The long rod 43 of the main stirring component 4 extends downward along the axial direction, which can guide the material to form an axial downward flow. This flow is superimposed with the axial vertical flow generated by the central rod 53 (extending vertically) of the central stirring component 5, forming a three-dimensional circulating flow. This avoids material deposition and is especially suitable for solid particles or high-viscosity media that need to be uniformly dispersed in the reaction of coating materials.

[0035] In this embodiment, as Figure 3 As shown, the connecting arm 52 is inclined, and the upper plate 42 is horizontal. In this configuration, the upper plate 42 does not participate in the stirring action. The horizontal distribution of the upper plate 42 stabilizes the material flow in the upper layer of the vessel 1, reduces surface turbulence, and prevents gas entrainment, making it suitable for reactions involving coating materials sensitive to foam. The inclined connecting arm 52 generates an axial force during rotation, enhancing the axial tumbling of the material. Simultaneously, the shear plane formed by the inclined angle forms an angle with the material flow direction, significantly increasing shear stress, making it suitable for emulsification and dispersion processes requiring high shear forces.

[0036] In this embodiment, each connecting arm 52 and each upper plate 42 are located in the same radial direction of the stirring shaft 3. This design allows the two stirring components to have a unified stirring action; the radial consistency of the stirring components can reduce mutual interference between fluids, making the stirring energy more concentrated in the axial and radial coordinated flow, thus reducing energy consumption; the unified action can avoid local turbulence caused by phase difference, which is suitable for the reaction of precision coating materials with high requirements for stirring stability (such as polymerization reactions that require strict control of temperature gradient).

[0037] In this embodiment, electric heating tubes 6 are embedded in both the inner wall of the double-layered structure of the vessel body 1 and the center of the stirring shaft 3. This multi-point heating design, with electric heating tubes 6 embedded in both the inner wall of the vessel body 1 and the center of the stirring shaft 3, provides the following benefits:

[0038] The inner wall heating tube directly contacts the edge of the material, and the central heating tube of the stirring shaft 3 heats the central area through heat conduction, forming a bidirectional temperature field of "edge-center", avoiding the radial temperature gradient caused by traditional single-point heating;

[0039] Uniform heating allows for precise control of the reaction temperature, reducing local overheating or underheating. It is especially suitable for the curing reaction of temperature-sensitive coating materials (such as thermosetting resins), ensuring consistent product performance.

[0040] Based on the above, the design can also adopt the following configuration: both the connecting arm 52 and the upper plate 42 are inclined. In this case, both the connecting arm 52 and the upper plate 42 participate in the mixing. The inclined upper plate 42 and the connecting arm 52 together form a multi-stage shear structure. The inclination angle of the upper plate 42 can guide the material to converge towards the center, while the inclination angle of the connecting arm 52 pushes the material outward, forming a "convergence-push" cyclic shear flow, which significantly enhances the horizontal shear force. The double-inclination structure can produce more complex hydrodynamic effects, which is suitable for the uniform mixing and dispersion of high-viscosity, non-Newtonian fluid coating materials. Under this design, the inclination angles of the upper plate 42 and the connecting arm 52 usually need to be adjusted during equipment production to obtain the desired dispersion effect.

[0041] Example 2

[0042] refer to Figure 4 Compared to Embodiment 1, the connecting arms 52 and the upper plates 42 are arranged in a staggered manner along the radial direction of the stirring shaft 3. Compared to Embodiment 1, this is a structural design in which the connecting arms 52 and the upper plates 42 form different stirring actions; specifically, the structure has a staggered distribution to form a multi-directional stirring flow field, and the radial flow of the main stirring component 4 and the axial flow of the central stirring component 5 intersect each other, which can eliminate the stirring dead zone, and is especially suitable for the uniform mixing of multiphase materials (such as solid-liquid-gas);

[0043] Stirring in different directions can generate micro-turbulence, which enhances micro-mixing efficiency and is suitable for coating material preparation processes that require rapid mass transfer or reaction (such as sol-gel reaction).

[0044] This technical solution achieves a synergistic effect of efficient stirring, uniform heating, and low energy consumption through structural optimization and flow field design, significantly improving the process adaptability and product quality of the coating material reactor.

[0045] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A novel coating material reaction vessel, comprising a vessel body (1) and a vessel cover disposed on the vessel body (1), wherein a stirring mechanism is installed on the vessel cover, characterized in that: The stirring mechanism includes a stirring motor (2) and a stirring shaft (3) connected to the stirring motor (2). A main stirring assembly (4) is arranged on the stirring shaft (3) located at the opening end of the vessel body (1), and a central stirring assembly (5) is arranged on the stirring shaft (3) below the main stirring assembly (4). The main stirring assembly (4) includes an upper rotating member (41) mounted on the stirring shaft (3), three or more upper plates (42) extending outward from the upper rotating member (41), and a long rod (43) arranged on each of the upper plates (42) and extending downward along the stirring shaft (3). The central stirring assembly (5) includes a central rotating component (51) mounted on the stirring shaft (3), three or more connecting arms (52) extending outward from the central rotating component (51), and a central rod (53) located at the end of each connecting arm (52) and extending in both the up and down directions along the axial direction of the stirring shaft (3). The extension length of the upper plate (42) is greater than the extension length of the connecting arm (52), and the diameter of the center rod (53) is greater than the diameter of the long rod (43).

2. The novel coating material reactor according to claim 1, characterized in that: The connecting arm (52) is arranged at an angle, and the upper plate (42) is arranged horizontally.

3. The novel coating material reactor according to claim 1, characterized in that: Both the connecting arm (52) and the upper plate (42) are arranged at an angle.

4. A novel coating material reactor according to claim 1, 2, or 3, characterized in that: Each of the connecting arms (52) and each of the upper plates (42) are located in the same radial direction of the stirring shaft (3).

5. A novel coating material reactor according to claim 1, 2, or 3, characterized in that: Each of the connecting arms (52) and each of the upper plates (42) are arranged in an alternating pattern along the radial direction of the stirring shaft (3).

6. A novel coating material reactor according to claim 1, 2, or 3, characterized in that: Electric heating tubes (6) are embedded in the inner wall of the vessel body (1) and the center of the stirring shaft (3).

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